MESON Chess Problem Database

Problem Display
PID: 205555 (8/3K4/8/8/3bk3/Q6N/3R4/8 w - - 0 1)

L'Hermet, Johann Georg Rudolf

Kagans Neueste Schachnachrichten, 1925

8/3K4/8/8/3bk3/Q6N/3R4/8

#2

4 + 2

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qd3#
  • Tries
    • 1.Ke6?
      • threat
        • 2.Qd3#
      • 1...Be3
        • 2.Qa8#
      • 1...Bc3!
    • 1.Qd3+?
      • 1...Kd5
        • 2.Qxd4#
      • 1...Ke5!
  • Keys
    • 1.Qd6!
      • 1...Ke3
        • 2.Qf4#
      • 1...Kf3
        • 2.Qf4#
      • 1...Kf5
        • 2.Qe6#
      • 1...Ba1
        • 2.Qf4#
      • 1...Bg1
        • 2.Qf4#
      • 1...Bb2
        • 2.Qf4#
      • 1...Bf2
        • 2.Qf4#
      • 1...Bc3
        • 2.Qf4#
      • 1...Be3
        • 2.Qd5#
      • 1...Bc5
        • 2.Qf4#
      • 1...Be5
        • 2.Qd3#
      • 1...Bb6
        • 2.Qf4#
      • 1...Bf6
        • 2.Qf4#
      • 1...Ba7
        • 2.Qf4#
      • 1...Bg7
        • 2.Qf4#
      • 1...Bh8
        • 2.Qf4#

This anticipates 176189(1968)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::QAB1(B)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAB1(B)
      • Vars
        • B(a);SBLOCK::QAB(B)
      • Refutation
        • B(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P_SPINB(a),S_FLIGHT::QAR1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(b);P-FLIGHT::QAB1(B)
      • K(b);S_FLIGHT::QAR1(B)
      • K(b);S_FLIGHT::QAB1(B)
      • B(a);::QAR1(B)
      • B(a);SBLOCK::QAB1(B)
      • B(a);OGATE,SBLOCK::QAB1(B)
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